Rockford Fosgate P3 12"" shallow mount subwoofer delivers ""Punch"" even when depth is limited, The P3SD412 features Dual 4-Ohm voice coils for wiring flexibility and 400 Watts RMS power handling for the most demanding application, Custom 10-AWG nickel plated push terminals, Reversable diamond cut cast aluminum trim ring, High excursion Poly-Ether-Ester surround, Kevlar Fiber reinforced semi-pressed paper cone and ABS/Acrylic dustcap, High-temp voice coil with spun-laced Nomex re-inforcement collar, Extended pole piece and bumped vented backplate, Protective PVC textured magnet cover, Rigid die-cast aluminum low profile basket, Linear spider with embedded 16 AWG tinsel leads, Vented spider cavity, Nominal Impedance: Dual 4-Ohm, Power Handling (Watts RMS): 400 Watts RMS, 800 Watts Max, Voice Coil Diameter: 2, 5"" 4-Layer (6, 35 cm), Speaker Connector: Dual 10 AWG compression, Fs (Hz): 45, Re (Ohms): 6, 80, Le (mH): 3, 8, Qms: 4, 60, Qes: 0, 88, Qts: 0, 74, Vas (Liters): 21, 0, Sd (cm2): 450, SPL (dB 1w/1m): 86, Xmax (mm): 10, 8, Woofer Displacement (in): 0, 071 cu, ft, (2, 01 Liters), Cutout Diameter (in): 11, 125 in, (28, 26 cm), Mounting Depth (in): 3, 625 in, (9, 21 cm), SKU: TBALL9737